Improvement in mitering-machines



S. R. PAY.

Mmmm-MACHINE.

Patented Apr1-18, 1876.

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N. PETERS, PHOTO-LrrHOGRAPHEP. wAsmNGYON, D c.

UNITED STATES PATENT EECE STEPHEN E.1 A`Y, oE PEoEIA, ILLINOIS.

IMPROVEMENT IN MlTERlNG-MACHINES.

Specification forming part of Letters Patent No. l 76,343, dated April18, 1876; application filed February 9, 1876.

To allwhom it may concern-t Be it known that I, STEPHEN B. PAY, of thecity of Peoria, in the county of Peoria, and in the State of Illinois,have invented an Improvement in Mitering Machines 5 and do herebydeclare that the following is a full, clear, and exact descriptionthereof, reference being had to the annexed drawings, making a part ofthis specification, in which like letters of reference refer to likeparts, and in which- Figure l represents a sectional elevation; Fig. 2,'a superiicial'view.

The object of this invention is to obviate a center-post or standard forthe pivot of the saw-frame, such an obstruction being much in the way ofthe free motion of said frame, and I do this by curving the arm (risingfrom the pivot) backward, and thence forward again to a point over thepivot, to allow the saw to traverse the center of said pivot, so thatthe operator can fix his stuff knowingly, without the trouble ofcalculating the exact point where the saw-cut will enter or leave thewood, which in this machine is always a cer tain xed point-i. e., overits pivot. I am aware that a pivoted saw-slide, for cutting heavy work,has been used before; but the saw does not traverse the pivotal point ofits frame, and the latter is supported entirely upon a lateral bearingradiating from the pivotal standard, and from having but one support isthus rendered unsteady. I obviate this difficulty by providing a bearingfor the outer end of my saw-frame beyond the margin of my table. I alsosimplify my runnin g-gear by using but two band-pulleys instead of four,thus much lightening the machine, and which I use only to cutpicture-moldiu gs or other light stuff; and it consists of a fixedsemicircular base or bed, (to receive the wood to be cut,) with asaw-frame and bed or slide above, pivoted at one end at the center ofsaid semicircular bed (at the vertical back-rest)upon a revolving diskor horizontal table below said bed. The frame radiates from said pivotacross the lower bed, and is supported at the free end upon an armbeneath, which also radiates from the table of said pivot, and restsupon a guide-bed below the operating-bed, or

minates in a handle beyond the outerl end of the saw-frame, by which thelatter yis moved round the latter bed at anyV angle with the verticalhack-rest of said hed, which rest extends across the pivot of saidsaw-frame. In a frame erected upon and above the disk or table is set apulley or baud-wheel, which rotates on a horizontal spindle immediately'over and in the prolongation upward of a line passing through the axisof the pivot of the saw frame. This pulley receives motion from themotive power by means of a vertical band from above, running in the lineof said prolongation from said pivot, in order that the swinging motionof said pulley may not throw the band out of gear. The spindle of thispulley is made the joint for a second frame extending radially from saidpivot and above said frame, and which carries another band-pulley at itsextremity, whose spind-le is again the joint of a third frame, whichdescends at an angle, and is jointed at its lower end to the center ofthe arbor of the sliding sawframe. These two pulley-frames are sojointed and arranged as to allow free motion to the saw and its carrieror sliding frame back from or toward the central pivot, and also theside motion round the outer edge ot' the operating bed or platform. Inshort, the circular saw works radially back and forth from the pivot atany required angle, the advantages being that mitering or beveling canbe accomplished without reversing the Wood end for end, the saw beingthe only thing moved in the operation.

In the drawings, which represent one of the forms in which I constructmy machine, A represents the base or supports of the machine, a a beinglegs or lugs by which it may be fastened to a bench; B, a horizontal bedplate or frame, lying on and secured to said supports A below andsupporting the pivoted table or rotating disk E, u being its pivotalpiu, and the arm e of said disk, which supports the outer end of the sawcarrier or slide I. C represents the frame which supports the woodensawing-platform D, made semicircular on the outer side, as indeed is thecase with all the foregoing frames. From the back edge of saidsawing-platform D rises the usual ledge or vertical backrest, againstwhich the wood to be sawed is held. Said ledge runs over and across thecenter of the pivot u of the table or disk E, at which point is anopening to allow the saw to pass at any angle. F F represent a frame.(erected upon and rotating with the pivoted disk E,) which supports theinner end ofthe bed M, and so arranged that the saw can pass along saidbed over the pivot u. The upper end of` said frame carries ahorizontally-pivoted hand-pulley, s, Whose tixed axle or spindlef, whichbraces the hars ot' the frame F F and extension G together, is iu theplane of the axis ot' said pivoted disk E. G is an extension of saidframe F F', composed of parallelside bars, inclosing the pulleys s andr. The latter frame terminates at its outer end with a secondhand-pulley on a fixed spindle, g, parallel with the former pulley. Thetwo pulleys are united by a hand, t'. H is a third frame, (of similarconstruction to the others,) extending down to and pivoted at the axisof the saw to the saw carrier or slide I. These two latter frames allowfree motion to the saw K, maintaining at the same time the integrity ot'the pulleys and bands, as also of the iirst pulley s, which receives thevertical band which is designed to run the saw from above thesaW-carrier-a slotted frame with saw Y bearings n n, which slide uponthe bed or frame M M. It is provided, also, with a handle, m, to governit, and a hand-guard, l, over or in front of the saw K, the saw havingthe usual arbor and side pulley for the belt k, which passes over thenearest pulley r at the junction of the oscillating frames G H. L is abrace, erected on the outer end of the arm or handle e of the rotatingdisk E, and supports the outer end of the saw frame or bed M. Beneaththe arm e, at the outer edge ot' the frame B, is a spring-bolt to detainthe frame M (when the saw is at work) in the holes ma; in the verticalseniicircular edge of said frame B.

l do not claim the devices shown and claimed in the patent to J. H.Gurell, patented November 1, 1870, No. 108,886; but

What I do claim isl. The saw frame or slide M, when extended over andacross its pivotal point or axis u to the opposite side of the table D,and there fixed to and supported on a radial lever, e, for the purposeot' allowing the saw Kto traverse the axis of said pivot, substantiallyas described.

2. The saw frame or slide M, supported at its free end on an arm orAlever, e, radiating from the disk E or pivot, and extending across thebed D, over and across its pivot u, and attached to curved arm F',rising from the pivot or its disk E, substantially as and for thepurposes described.

3. The co1nbination,with the pivoted sawframe M, of pi\'otframe F,pivotal disk E, arm e, provided with catch w, and brace L, substantiallyas and for the purposes de scribed.

4. The combination and arrangement of the hed D C B, pivotal table E,frame F, attached to the saw-frame M, and provided with pulley s andaxle f, frame G G, fixed axle g, provided with hand-pulley r, frame H,attached to sawcarrier I, operated as and for the purposes described.

In testimony that I claim the foregoing mitcr and bevel machine I havehereunto set my hand this 31st day of January, A. D. 1876.

STEPHEN R. PAY. Witnesses:

H. W. WELLS, J As. M. Mouse.

